Silicon vs Rutherfordium

PropertySi SiliconRf Rutherfordium
Atomic number14104
SymbolSiRf
NameSiliconRutherfordium
Categorymetalloidtransition-metal
Standard Atomic Weight28.085 u263 u
Period37
Group144
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p2[Rn]7s25f146d2
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][3, 4]
Electronegativity (Pauling)1.9N/A
Electron affinity1.385 eV0.65 eV
Density2329.6 kg/m³2.330000e+4 kg/m³
Melting point1413.85 °C2126.85 °C
Boiling point3264.85 °C5526.85 °C
Discovery year18241964